1 files changed, 110 insertions, 0 deletions
diff --git a/src/java/com/jogamp/common/util/awt/AWTEDTExecutor.java b/src/java/com/jogamp/common/util/awt/AWTEDTExecutor.java
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+++ b/src/java/com/jogamp/common/util/awt/AWTEDTExecutor.java
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+/**
+ * Copyright 2012 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.common.util.awt;
+
+import java.awt.EventQueue;
+import java.lang.reflect.InvocationTargetException;
+
+import com.jogamp.common.util.RunnableExecutor;
+
+/**
+ * AWT EDT implementation of RunnableExecutor
+ */
+public class AWTEDTExecutor implements RunnableExecutor {
+    /** {@link RunnableExecutor} implementation invoking {@link Runnable#run()}
+     *  on the AWT EDT. 
+     */
+    public static final AWTEDTExecutor singleton = new AWTEDTExecutor();
+
+    private AWTEDTExecutor() {}
+    
+    @Override
+    public void invoke(boolean wait, Runnable r) {
+        if(EventQueue.isDispatchThread()) {
+            r.run();
+        } else {
+          try {
+            if(wait) {
+                EventQueue.invokeAndWait(r);
+            } else {
+                EventQueue.invokeLater(r);
+            }
+          } catch (InvocationTargetException e) {
+            throw new RuntimeException(e.getTargetException());
+          } catch (InterruptedException e) {
+            throw new RuntimeException(e);
+          }
+        }
+    }
+
+    /**
+     * Executes the given runnable on the AWT-EDT and return <code>true</code>, if
+     * <ul>
+     *  <li>current-thread is the AWT-EDT, <i>or</i></li>
+     *  <li>the given tree-lock is not hold by current-thread (-> invoke on AWT-EDT)</li>
+     * </ul>
+     * <p>
+     * Otherwise execute the given runnable on the current-thread and return <code>true</code>, if
+     * <code>allowOnNonEDT</code> is <code>true</code>.<br/>
+     * This implies that the given tree-lock is being hold by the current-thread.
+     * </p>
+     * <p>
+     * Otherwise the runnable is not executed and <code>false</code> is returned.
+     * </p>
+     * 
+     * @param treeLock representing the AWT-tree-lock, i.e. {@link java.awt.Component#getTreeLock()}
+     * @param allowOnNonEDT allow execution on non AWT-EDT in case current thread is not AWT-EDT and the tree-lock is being hold
+     * @param wait if true method waits until {@link Runnable#run()} is completed, otherwise don't wait.  
+     * @param r the {@link Runnable} to be executed.
+     * @return <code>true</code> if the {@link Runnable} has been issued for execution, otherwise <code>false</code>   
+     */
+    public boolean invoke(Object treeLock, boolean allowOnNonEDT, boolean wait, Runnable r) {
+        if( EventQueue.isDispatchThread() ) {
+            r.run();
+            return true;
+        } else if ( !Thread.holdsLock(treeLock) ) {
+            try {
+                if(wait) {
+                    EventQueue.invokeAndWait(r);
+                } else {
+                    EventQueue.invokeLater(r);
+                }                
+            } catch (InvocationTargetException e) {
+                throw new RuntimeException(e.getTargetException());
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            }
+            return true;
+        } else if ( allowOnNonEDT ) {
+            r.run();
+            return true;
+        } else {
+            return false;
+        }
+    }
+}